Internal-combustion-engine-testing device



R. G. EDGERTON.

INTERNAL COMBUSTION ENGINE TESTING DEVICE. APPLICATION FILED MAY 26, I916.

Patented June 22, 1920.

JR 6. z z erwzz,

attozncq ROY G. EDGERTQN, CF SUFFOLK, VIRGINIA.

ENTEBIIAL-COMB'USTIQN-ENGINE-TESTING BEVIGEK Specification of Letters Patent.

Patented June 2. 192

Application filed May 26, 1916. Serial 3330. 100,135.

To all whom it may concern:

Be it known that L Rev G. EDGERTON, a citizen of the United States, and-resident of Suiiolk in the county of Nansemond, State of Virginia, have invented. certain new and useful improvements in lnternal-tlombns tion-Engine-Testing Devices, of which the "following is a specification.

invention relates to improvements in internal combustion engine testing devices.

The primary object of the present invention is to. provide a testing. device for testing the cylinders of engines of the above mentioned character in such a way as to positively tell which of the cylinders are in perfect working condition.

Another important object of my invention is to provide a testing device which may be used to either test the engine cylinders one at a time or to test a plurality of them at the same time.

A further object of the invention is to provide testing device that may be quickly attached or detached from the ignition means of the cylinders.

Still further object of the invention is to provide a device of the above mentioned character which is comparatively small so that the same may be easily carried about.

An additional object of the invention is to provide a testing device which. is simple in construction, consists of few parts, is inexpensive to manufacture, and which may he placed on the market at a comparatively low cost.

The above and other objects of the inveni /ill fully appear when taken. in conctiou with following specification and ccompanyitcg drawings and be explicitly defined in the appended claims.

The invention consists of the novel combinations and arrangement of parts and mam net of operation-that will. be fully set forth hereinafter and illustrated in the accompanying drawings in which Figure l is a top view of an internal combustion engine showing my testing de ice in position for testing the cylindersoi same;

Fig. 2 is a side view of the testing device.

rig. 3 is a topview oi? the testing device.

6 ember to which Fig. is a view 01 the i the conductors are connected.

Fig. 5 is a'dctail view oi one end of one of the cumin-store.

Like characters of reference indicate like parts in all the views.

Referring to the drawing, the numeral 5. designates an internal combustion engine which may be of any conventiohal type. Mounted in the cylinder head 6 of the engine 5 are the usual spark plugs 'Znvhich are in circuit with the usual electrical supply.

The numeral 10 denotes a bolt or pivot member having a head 11 upon one end thereof. Arranged upon the bolt 10 in superposed relation is a plurality of annular members 12 each of whichis provided with an opening 13 which accommodates the central member or bolt 10. These members 12 are formed with a-collar or flange 14 at their upper end which engages the base 13 of the member 12 next in order and supports the same. Each of the members 12 is beveled toward the outer edge. Arranged upon;

the bolt 16 between the under face of the head 11 and the upper face of the collar or flange of the topmost member 12 is awasher 15. 'llhe lower end of this bolt'or central member 10 receives a washer 16 which engages the base 1.3 of the bottonimost member 12. Tl'ireaded upon this end of the bolt or central member is a nut- 17 WlllCll'hOldS the members 12 in contact with each other.

For each of the cylinders 6 is an insulated electricity conductoc18 that have secured to the outer ends thereof-spring actuated clamping members 19 which may be quickly attached or detached from the spark pluqs. I

l ounted upon the opposite end of each of the conductors 18 is a resilient clip QOhaving an opening 20. therein that is adapted to receive one of the annular members 20. This form of clip is merely shown for the purpose of illustration, and other forms may be used if it should be so desired. Each of these clips 19 is engaged with one of the annular members 2 and is free to swivel thereon.

The numeral 21 indicates a nut or any other metal part of the engine casing.

The manner of testing internal combustion engine cylinders in accordance with the present invention is as follows:

()ne of the conductors 18 is engaged with the nut 21 or other metal part of the engine. The other conductors are now detachably engaged with the spark plugs of-the cylinders "that are to be rendered inoperative which will cause the electric current which flows to the spark plugs to be ground or short circuited to the metal part 21. This Will render the cylinders that are in the circuit inoperative.

It is to be noted that in Fig. 1 all the spark plugs are not in circuit with the con ductors 18 but it is to be understood that any number of the s arlrplugs, preferably all but one, may be in circuit with these conductors, thereby showing the exact Working condition of the single cylinder left operatily testing device may be used forburning carbon from the engine cylinders as Well as for testing the cylinders. In using my device for burning carbon from the cylinders of the engine, the conductors are connected up so as to leave one cylinder working and the throttle is Wide open. Each of the cylinders are allowed to-op'erate under the above conditions from five to ten minutes or until each has stopped the knockmay fairly fall within the scope of the ap-- pended claims. What is claimed is:

1. A testing device of the character described including a plurality of electricity conductors detachably connected together and clamping members carried by the outer end of the same.

2. A testing device of the character de scribed including a central member, a plurality of electricity conductors, resilient clips mounted upon the inner ends of the conductors and engaged and loosely connected with the central member and spring actuated clamping members mounted upon the outer ends of the electricity conductors.

ROY G. EDGERTON. 

